Malicious PDF — malware analysis report

Static analysis result for SHA-256 0007856236ebf116…

MALICIOUS

PDF

50.4 KB Created: 2020-04-02 21:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7bce590753df30ed5d0e1dc600b89dba SHA-1: 52596c79874576fcd6312a979ddc7bc3457af885 SHA-256: 0007856236ebf1160e0d93337c343e9f4220f3ad26d12babcdf4cc3125c07ad7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The embedded URLs point to various domains, suggesting a link farm or redirection scheme to distribute malicious content or engage in SEO spam. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://impact-active.com/uploads/1/3/0/6/130639131/130639131.html#ewha+korean+textbook+pdf
    • http://floriowoodworking.com/uploads/1/3/0/7/130738784/bakobujokipub.pdf
    • http://farishtrust.org/uploads/1/3/0/9/130969061/a65b4b59.pdf
    • http://adrasteiablaise.com/uploads/1/3/0/5/130590325/berinuzetululezajida.pdf
    • http://canteenshop.com/uploads/1/3/0/7/130739483/5474758.pdf
    • http://nobuhotelmarbella.devsite-1.com/uploads/1/3/0/5/130551823/6d04433204fe4fe.pdf
    • http://mcypaa41.com/uploads/1/3/0/2/130289749/ditupidesexane-refulare.pdf
    • http://rivervalleymetal.com/uploads/1/3/0/7/130738622/nuluwof.pdf
    • http://sayn-wittgenstein-piraccini.com/uploads/1/3/0/2/130272557/vabitomu_sazakademelen_wevenejukav_fekozezeviv.pdf
    • http://wombleinc.com/uploads/1/3/0/6/130620173/bavibelarojipopize.pdf
    • http://tadpoledryerase.com/uploads/1/3/0/5/130551427/c4859c69d3ad8b0.pdf
    • http://thecherryontopbakery.com/uploads/1/3/0/8/130874031/1288167.pdf
    • http://wodenoutdoors.com/uploads/1/3/0/7/130776340/5802617.pdf
    • http://lead180consulting.com/uploads/1/3/0/5/130539084/d266dc.pdf
    • http://landandsearepair.com/uploads/1/3/0/5/130539311/wepimisigubipidanimo.pdf
    • http://swimfunandfitness.com/uploads/1/3/0/5/130539584/ruxaxarira.pdf
    • http://losangeleshollywoodtours.com/uploads/1/3/0/6/130639533/6054180.pdf
    • http://coutureeatz.com/uploads/1/3/0/4/130488196/dugatusavavumekam.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000645c.bin
9255cb7fc16a338a813641e06486b560e42e956b5ca81937796be423984f4790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 7708 bytes
font_01_sfnt_off0000827c.bin
cf97e0de6512647675ab3185d92c46d807823f861158c2849640fc9cd2c3f4c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827C 11388 bytes
font_02_sfnt_off0000a638.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA638 16204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.